From Longman Dictionary of Contemporary Englishblazerblaz‧er /ˈbleɪzə $ -ər/ noun [countable] DCCSESa jacket, sometimes with the special sign of a school, club etc on it
Examples from the Corpus
blazer• He was lying face downwards in the shadow of the short diving-board, fully dressed in a blazer and white linen trousers.• Gone were the frivolous hats and bright blazers.• The jovial anchorman on the local news reaches into the pocket of his blazer and extracts a fortune cookie.• Our escorts, both dressed in blazers and boaters jumped on-board - and promptly steered us straight for a garden wall.• The nearby mall is so upscale that even the Vendoland janitor is dressed in a bright red blazer.• a blue wool blazerOrigin blazer (1800-1900) blaze; from the originally bright colors of blazers 